The Sealy Activsleep Ortho Posture Firm Support Mattress is part of Sealy’s Activsleep range, expertly designed to ensure you get the good quality sleep you need to perform at your best every day. A supportive, orthopaedic mattress, Activsleep Ortho Posture Firm Support delivers support where you need it most, in a firm feel. The PostureTech Core Support system gradually gets firmer as more pressure is applied, so you’ll enjoy personalised support and comfort. This high-quality mattress is hypoallergenic and approved by Allergy UK for a healthier sleep. It comes complete with Free Next Day Delivery and a 5 Year Guarantee.